If the general assembly approves it, the United Nations can send in "peacekeepers" to ensure cease-fires in conflict areas, although the effectiveness of this tactic is in dispute.
Answer:
B. The mechanical reaper! A+C helped westward expansion..
Explanation:
The reason why people risk their lives to fight against the world's super power was because of the reason that they want to have their freedom and to be able to get and achieve the rights in which they think that they truly deserves.
A, the climate of the Midwest is the same across the region.